區間修改、單點查詢
阿新 • • 發佈:2018-11-03
Color the ball
Time Limit: 9000/3000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others)
Total Submission(s): 29305 Accepted Submission(s): 14264
當N = 0,輸入結束。
Output 每個測試例項輸出一行,包括N個整數,第I個數代表第I個氣球總共被塗色的次數。
Sample Input 3 1 1 2 2 3 3 3 1 1 1 2 1 3 0
Sample Output 1 1 1 3 2 1
Source
//hdu 1556 #include <iostream> #include <cstdio> #include <algorithm> #include <cstring> #include <set> #include <map> using namespace std; #define ll long long #define lowbit(x) x&(-x) constint N=1e5+9; ll a[N],c[N]; ll n,x,y; void update(ll x,ll num){ while(x<=n){ c[x]+=num; x+=lowbit(x); } } ll getsum(ll x){ ll sum = 0; while(x>0){ sum+=c[x]; x-=lowbit(x); } return sum; } int main() { while(~scanf("%lld",&n),n){ for(ll i = 1 ;i <=n+9;i++){ a[i]=0; c[i] =0; } for(ll i =0;i<n;i++){ scanf("%lld%lld",&x,&y); update(x,1); update(y+1,-1); } for(ll i =1;i<=n;i++){ printf("%lld%c",getsum(i),i==n?'\n':' '); } } return 0; }